VULNERABILITY INTELLIGENCE

CVE-2021-23386

CVSS score7.7 HIGH
EPSS probability1.43%
CISA KEVNot currently listed
Published2021-05-20
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L

Description

This affects the package dns-packet before 5.2.2. It creates buffers with allocUnsafe and does not always fill them before forming network packets. This can expose internal application memory over unencrypted network when querying crafted invalid domain names.

Weakness classification

  • nvd@nist.gov: CWE-909

Primary references